Sieve-purifier.



W. BAKER.

SIEVE PURIFIER. APPLICATION FILED SEPT. 19, 1911.

1,632,104, Patented July 9, 1912. Fm.

ff a Z0 I WITNESSES COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. c.

WILLIAM BAKER, 0F YOUNGSTOWN, OHIO.

SIEVE-PURIFIER.

Application filed September 18, 1911.

To all whom 2'25 may 00n0ern:

Be it known that I, VVILLiAM BAKER, a citizen of the United States of America, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Sieve-Purifiers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to sieve purifiers, and the object of my invention is to provide a purifying machine in which a continuous operation can be performed for expeditiously and economically purifying and separating grades of middlings.

Another object of this invention is to combine parts of well known purifiers and separators to provide a self-contained machine that continuously uses its own air and thereby obviates discoloration by air that is obtained from an outside source.

In all standard makes of sieve purifiers, the air is drawn from the outside of the machine through openings that are below the sieve cloth. This air contains impurities that discolor the stock or material that the fan draws up with the air and discharges into the dust collector or cyclone. By repeatedly using one supply of air, the value of the stock that is discharged from the dust collector or cyclone is materially increased in value, and this is accomplished by a combination of elements readily embodied in one machine that is easily controlled. YVith this understanding of the broad principle of my invention, reference will now be had to the drawing and the detail description thereof. But in considering the detail description and drawings, it is to be understood that the structural elements are susceptible to such changes, in the size, shape and manner of assemblage, as fall within the scope of the appended claim.

In the drawing :-Figure 1 is a longitudinal sectional view of the machine, and Fig. 2 is a plan of the same.

A machine in accordance with this invention comprises the casing 1 and in the for ward end of said casing there is located a conventional form of dust collector 2 preferably of that type commonly known to the trade as the cyclone collector. Associated with this collector is a standard sieve purifier. The forward upper end of the casing 1 has a hopper 3 provided with an inlet pipe Specification of Letters Patent.

Patented July 9, 1912.

Serial No. 649,918.

A, and in the lower end of this hopper is a feeding device 17.

Arranged in the casing l is a reciprocatory sieve 7 and this sieve is reciprocated or rocked through the medium of the eccentric 22 and a suitable source of power (not shown). The sieve 7 is suspended from transverse rods 22, but I reserve the right to use any suitable mechanism for reciproeating said sieve. The forward end of the sieve 7 extends under the hopper 3 to receive the stock or material from said hopper that is spread upon the sieve surface in a thin sheet. The rear end of the sieve discharges into a tail spout 11 carried by the end wall of the casing 1 opposite the end wall supporting the hopper 3. i

The top of the casing 1 has a fan casing 23 containing a conventional form of fan 13 adapted to create a vacuum in the air chamber 10 above the sieve 7. The fan casing 23 has a flue 1 1 that extends over the top of the casing 1 and downward outside of the casing 1 and into the cyclone collector 2.

Between the top of the casing 1 and the sieve 7 there is a partition 24 provided with a plurality of valves 12 and these valves are regulated through the medium of handles 25 at one side of the machine. These valves regulate the amount of air that passes through the material on the sieve 7. The cyclone collector is provided with a spout 5 by which the dust that is separated out of the air in the cyclone is discharged into a conveyor 6 located in the bottom of the casing 1. The material that passes through the sieve 7 is precipitated into a conveyer 9 located in the bottom of the casing 1.

Arranged below the sieve 7 are carrying boards 16 to carry the material that passes through the sieve 7 down and over the tail of the cyclone collector and discharge the material into the conveyer 9.

Operation P-The stock or material fed on to the sieve 7 by the feeding device 17 is agitated upon the reciprocating sieve 7. The fan 13 maintains the circulation of air through the sieve 7 and the air lifts the fine impurities and dust out of the heavy particles. The fine dust and impurities are conducted by the fine 1% to the cyclone separator 2. It is in this separator that the action of air separates dust and impurities from the air and the pure air is discharged from the cyclone through the spout A into the casing 1 under the sieve 7 The pure air is again drawn through the sieve and the material upon the sieve, and this operation is continuously carried on whereby the air is freed from dust and impurities. The dust and impurities, as fine bran, cell linings and germs that are intermingled with the air passing through the cyclone, when separated from the air, are discharged into the conveyer 6. The material that fails to pass through the sieve 7, on account of its size, is discharged into the tail spout 11, and the material that passes through the sieve is carried off by the conveyer 9.

I reserve the right to locate the cyclone separator at various positions within the casing 1, or even upon the outside of the casing, by providing suitableflues.

It is thought that the operation and utility of my machine will be apparent without further description, and that the machine can be used for other purposes than that herein specified.

l/Vhat I claim is A machine of the type described comprising a casing, a sieve positioned within said casing and dividing the easing into an upper and a lower chamber, a collector located in said lower chamber at one end thereof, stepped inclined carrying boards arranged in the lower chamber directly over said collector, a fan mounted in the top of said casing, communicating with said upper chamber and adapted to produce a circulation of air through said sieve means for establishing communication between said tan and said collector, a hopper at one end of the upper chamber, a discharge spout at the lower portion of the other end of the upper chamber, a conveyer mounted at the bottom of said lower chamber, and a plurality of valves at the upper portion of said casing for controlling the circulation of air through said sieve and said collector, said valves positioned at each side of said fan and near the upper end of said upper chamber.

In testimony whereof I aflix my signature in the presence of two witnesses.

WILLIAM BAKER. lVitnesses:

M. H. BURKY, A. E. BURKY.

Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents, Washington, D. C. 

